Wi-Fi module targets low power IoT applications

16th March 2015

Mick Elliott

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Datasheet

The new WINC1500 Wi-Fi Module from Atmel Co is on sale at Mouser Electronics. The module is a low-power consumption 802.11 b/g/n WiFi module specifically optimised for low power Internet of Things (IoT) applications. The WINC1500 WiFi module supports WEP, WPA, and WPA2 WiFi security encryption as well as China WAPI security while drawing as little as 4µA.

The module includes features that allow both WiFi and Bluetooth signals to coexist locally without any signal interference.

It is a highly integrated device featuring a small form factor at only 21.5mm x 14.5mm x3.4mm. It includes an integrated power amplifier, low noise amplifier (LNA), all necessary power management functions, and an integrated antenna.

The module targets low power WiFi wireless applications and draws only 4µA in Deep Power Down mode. When in beacon monitoring mode the module draws only 850µA in Doze Mode. It provides SPI, UART, and I2C host interfaces for communicating with a host microcontroller.

It also supports 2-wire and 3-wire Wi-Fi/Bluetooth coexistence signaling interface. The interface allows this module to coordinate transmission and reception with a compatible Bluetooth module to insure that both radios do not interfere with each other.

The Atmel WINC1500 is based on a powerful Cortus-APS3 32-bit processor. This processor performs hardware accelerated MAC functions including association, authentication, power management, security key management, and MSDU aggregation/de-aggregation. In addition, the processor provides flexibility for various modes of operation, such as STA and AP modes. An on-chip IP stack minimises the host microcontroller requirements and supports TCP, UDP, DHCP, ARP, HTTP, SSL, and DNS.